Davis jabbed at Sarnavskiy as the bout started in an attempt to keep some space against him, but Sarnavskiy responded with a right-handed shot that knocked down Davis.

Sarnavskiy then landed more punches on Davis, who rolled to try to prevent more contact, but Sarnavskiy kept at it and was able to finish the fight by locking Davis in a rear-naked choke hold at 1:40.

The 5-foot-8-inch Davis, now 22-10, gave away not only three inches in height to Sarnavskiy, but at age 40 was 16 years older than his 24-year old opponent.

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Sarnavskiy, a native of Omsk, Russia, is a submission specialist. He now has a 24-1 record.

The Davis-Sarnavskiy bout was one of five Bellator lightweight tournament fights on the Bellator 101 card televised nationally on Spike TV. Winners advance to the next round expected to be held later this year, with the tournament champion ultimately winning $100,000 in total prize money and a guaranteed title shot against the Bellator lightweight champion, currently undefeated Michael Chandler.